class_docstr: Run tests for azfs backend using shared access signature authentication.
code: def __init__(
      self, methodName="runTest"
  ):  # pylint: disable=invalid-name
      self.account = "devstoreaccount1"
      self.container = "aztest"
      self.path_root = "az://" + os.path.join(
          self.account, self.container
      )
      super().__init__(methodName)
  
imports: import os
  import subprocess
  import sys
  import pytest
  import tensorflow
  import tensorflow_io
label_desc: Use image node_id 1 to create a new AZFSSASTest object from inherited base classes: tf.test, AZFSTestBase with example: obj = AZFSSASTest(methodName)